Actinoceratidae
The Actinoceriatidae are a family of actinocerids named by Saemann in 1853 for those that grew to have large shells with blunt apecies and large siphuncles with widely expanded segments and a generally arcuate endosiphucular canal system. Their range is from the upper Middle Ordovician to the Lower Silurian. Actinocerids are generally straight-shelled nautiloid cephalopods with a siphuncle composed of expanded segments, typically with thin connecting rings, in which the internal deposits are penetrated by a system of canals
primaryTopic
Actinoceratidae
The Actinoceriatidae are a family of actinocerids named by Saemann in 1853 for those that grew to have large shells with blunt apecies and large siphuncles with widely expanded segments and a generally arcuate endosiphucular canal system. Their range is from the upper Middle Ordovician to the Lower Silurian. Actinocerids are generally straight-shelled nautiloid cephalopods with a siphuncle composed of expanded segments, typically with thin connecting rings, in which the internal deposits are penetrated by a system of canals
has abstract
The Actinoceriatidae are a fam ...... ostoceras are closely related.
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kingdom
order (taxonomy)
phylum
Wikipage page ID
24,595,677
Wikipage revision ID
743,201,892
familia
Actonoceratidae
familia authority
fossil range
Middle Ordovician - Lower Silurian
subdivision
subdivision ranks
subject
hypernym
comment
The Actinoceriatidae are a fam ...... netrated by a system of canals
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label
Actinoceratidae
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